<?php
/**
 * functions.php
 * @version 2.3
 * @desc General issued php function library for me
 * @author Fándly Gergő Zoltán
 * @copy 2017 Fándly Gergő Zoltán
 */

class functions{
    const STR_SAME=0;
    const STR_LOWERCASE=1;
    const STR_RACCENT=2;
    const STR_RACCLOW=3;
    const RAND_SMALL=0;
    const RAND_LARGE=1;
    const RAND_SPEC=2;
    const COOKIE_LIFETIME=3;
    
    public static function setError($code){
        global $errcode;
        if(isset($errcode)){
            array_push($errcode, $code);
        }
        else{
            $errcode=array($code);
        }
        setcookie("errcode", serialize($errcode), time()+functions::COOKIE_LIFETIME);
    }
    
    public static function isError(){
        global $errcode;
        if(isset($errcode) || isset($_COOKIE['errcode'])){
            return true;
        }
        else{
            return false;
        }
    }
    
    public static function getErrorArray(){
        global $errcode;
        if(functions::isError()){
            if(isset($errcode)){
                return $errcode;
            }
            if(isset($_COOKIE['errcode'])){
                return unserialize($_COOKIE['errcode']);
            }
        }
        else{
            return 0;
        }
    }
    
    public static function setMessage($code){
        global $msgcode;
        if(isset($msgcode)){
            array_push($msgcode, $code);
        }
        else{
            $msgcode=array($code);
        }
        setcookie("msgcode", serialize($msgcode), time()+functions::COOKIE_LIFETIME);
    }
    
    public static function isMessage(){
        global $msgcode;
        if(isset($msgcode) || isset($_COOKIE['msgcode'])){
            return true;
        }
        else{
            return false;
        }
    }
    
    public static function getMessageArray(){
        global $msgcode;
        if(functions::isMessage()){
            if(isset($msgcode)){
                return $msgcode;
            }
            if(isset($_COOKIE['msgcode'])){
                return unserialize($_COOKIE['msgcode']);
            }
        }
        else{
            return 0;
        }
    }
    
    public static function clearError(){
        global $errcode;
        if(isset($errcode)){
            unset($errcode);
        }
        setcookie("errcode", null, -1);
    }
    
    public static function clearMessage(){
        global $msgcode;
        if(isset($msgcode)){
            unset($msgcode);
        }
        setcookie("msgcode", null, -1);
    }
    
    public static function randomString($length, $char=functions::RAND_SMALL){
        if($char==0){
            $charset="0123456789abcdefghijklmnopqrstuvwxyz";
        }
        else if($char==1){
            $charset="0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
        }
        else if($char==2){
            $charset="0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ~!@#$%^&*()_-=+\?/.>,<";
        }
        $charsetlength=strlen($charset);
        $string="";
        for($i=0; $i<$length; $i++){
            $string=$string . $charset[rand(0, $charsetlength-1)];
        }
        return $string;
    }
    
    public static function get_string_between($string, $start, $end){
        $string=' ' . $string;
        $ini=strpos($string, $start);
        if($ini==0) return '';
        $ini+=strlen($start);
        $len=strpos($string, $end, $ini) - $ini;
        return substr($string, $ini, $len);
    }
    
    public static function process_string($str, $dep){
        global $functions_accent_convert;
        switch($dep){
            case 0:
                {
                    return $str;
                    break;
                }
            case 1:
                {
                    return strtolower($str);
                    break;
                }
            case 2:
                {
                    return strtr($str, $functions_accent_convert);
                    break;
                }
            case 3:
                {
                    return strtolower(strtr($str, $functions_accent_convert));
                    break;
                }
        }
        return 0;
    }
    
    public static function validate_captcha($secretkey, $response){
        $verify=file_get_contents("https://www.google.com/recaptcha/api/siteverify?secret=".$secretkey."&response=".$response);
        $data=json_decode($verify);
        if($data->success){
            return true;
        }
        else{
            return false;
        }
    }
};

$functions_accent_convert=array(
        // Decompositions for Latin-1 Supplement
        chr(195).chr(128) => 'A', chr(195).chr(129) => 'A',
        chr(195).chr(130) => 'A', chr(195).chr(131) => 'A',
        chr(195).chr(132) => 'A', chr(195).chr(133) => 'A',
        chr(195).chr(135) => 'C', chr(195).chr(136) => 'E',
        chr(195).chr(137) => 'E', chr(195).chr(138) => 'E',
        chr(195).chr(139) => 'E', chr(195).chr(140) => 'I',
        chr(195).chr(141) => 'I', chr(195).chr(142) => 'I',
        chr(195).chr(143) => 'I', chr(195).chr(145) => 'N',
        chr(195).chr(146) => 'O', chr(195).chr(147) => 'O',
        chr(195).chr(148) => 'O', chr(195).chr(149) => 'O',
        chr(195).chr(150) => 'O', chr(195).chr(153) => 'U',
        chr(195).chr(154) => 'U', chr(195).chr(155) => 'U',
        chr(195).chr(156) => 'U', chr(195).chr(157) => 'Y',
        chr(195).chr(159) => 's', chr(195).chr(160) => 'a',
        chr(195).chr(161) => 'a', chr(195).chr(162) => 'a',
        chr(195).chr(163) => 'a', chr(195).chr(164) => 'a',
        chr(195).chr(165) => 'a', chr(195).chr(167) => 'c',
        chr(195).chr(168) => 'e', chr(195).chr(169) => 'e',
        chr(195).chr(170) => 'e', chr(195).chr(171) => 'e',
        chr(195).chr(172) => 'i', chr(195).chr(173) => 'i',
        chr(195).chr(174) => 'i', chr(195).chr(175) => 'i',
        chr(195).chr(177) => 'n', chr(195).chr(178) => 'o',
        chr(195).chr(179) => 'o', chr(195).chr(180) => 'o',
        chr(195).chr(181) => 'o', chr(195).chr(182) => 'o',
        chr(195).chr(182) => 'o', chr(195).chr(185) => 'u',
        chr(195).chr(186) => 'u', chr(195).chr(187) => 'u',
        chr(195).chr(188) => 'u', chr(195).chr(189) => 'y',
        chr(195).chr(191) => 'y',
        // Decompositions for Latin Extended-A
        chr(196).chr(128) => 'A', chr(196).chr(129) => 'a',
        chr(196).chr(130) => 'A', chr(196).chr(131) => 'a',
        chr(196).chr(132) => 'A', chr(196).chr(133) => 'a',
        chr(196).chr(134) => 'C', chr(196).chr(135) => 'c',
        chr(196).chr(136) => 'C', chr(196).chr(137) => 'c',
        chr(196).chr(138) => 'C', chr(196).chr(139) => 'c',
        chr(196).chr(140) => 'C', chr(196).chr(141) => 'c',
        chr(196).chr(142) => 'D', chr(196).chr(143) => 'd',
        chr(196).chr(144) => 'D', chr(196).chr(145) => 'd',
        chr(196).chr(146) => 'E', chr(196).chr(147) => 'e',
        chr(196).chr(148) => 'E', chr(196).chr(149) => 'e',
        chr(196).chr(150) => 'E', chr(196).chr(151) => 'e',
        chr(196).chr(152) => 'E', chr(196).chr(153) => 'e',
        chr(196).chr(154) => 'E', chr(196).chr(155) => 'e',
        chr(196).chr(156) => 'G', chr(196).chr(157) => 'g',
        chr(196).chr(158) => 'G', chr(196).chr(159) => 'g',
        chr(196).chr(160) => 'G', chr(196).chr(161) => 'g',
        chr(196).chr(162) => 'G', chr(196).chr(163) => 'g',
        chr(196).chr(164) => 'H', chr(196).chr(165) => 'h',
        chr(196).chr(166) => 'H', chr(196).chr(167) => 'h',
        chr(196).chr(168) => 'I', chr(196).chr(169) => 'i',
        chr(196).chr(170) => 'I', chr(196).chr(171) => 'i',
        chr(196).chr(172) => 'I', chr(196).chr(173) => 'i',
        chr(196).chr(174) => 'I', chr(196).chr(175) => 'i',
        chr(196).chr(176) => 'I', chr(196).chr(177) => 'i',
        chr(196).chr(178) => 'IJ',chr(196).chr(179) => 'ij',
        chr(196).chr(180) => 'J', chr(196).chr(181) => 'j',
        chr(196).chr(182) => 'K', chr(196).chr(183) => 'k',
        chr(196).chr(184) => 'k', chr(196).chr(185) => 'L',
        chr(196).chr(186) => 'l', chr(196).chr(187) => 'L',
        chr(196).chr(188) => 'l', chr(196).chr(189) => 'L',
        chr(196).chr(190) => 'l', chr(196).chr(191) => 'L',
        chr(197).chr(128) => 'l', chr(197).chr(129) => 'L',
        chr(197).chr(130) => 'l', chr(197).chr(131) => 'N',
        chr(197).chr(132) => 'n', chr(197).chr(133) => 'N',
        chr(197).chr(134) => 'n', chr(197).chr(135) => 'N',
        chr(197).chr(136) => 'n', chr(197).chr(137) => 'N',
        chr(197).chr(138) => 'n', chr(197).chr(139) => 'N',
        chr(197).chr(140) => 'O', chr(197).chr(141) => 'o',
        chr(197).chr(142) => 'O', chr(197).chr(143) => 'o',
        chr(197).chr(144) => 'O', chr(197).chr(145) => 'o',
        chr(197).chr(146) => 'OE',chr(197).chr(147) => 'oe',
        chr(197).chr(148) => 'R',chr(197).chr(149) => 'r',
        chr(197).chr(150) => 'R',chr(197).chr(151) => 'r',
        chr(197).chr(152) => 'R',chr(197).chr(153) => 'r',
        chr(197).chr(154) => 'S',chr(197).chr(155) => 's',
        chr(197).chr(156) => 'S',chr(197).chr(157) => 's',
        chr(197).chr(158) => 'S',chr(197).chr(159) => 's',
        chr(197).chr(160) => 'S', chr(197).chr(161) => 's',
        chr(197).chr(162) => 'T', chr(197).chr(163) => 't',
        chr(197).chr(164) => 'T', chr(197).chr(165) => 't',
        chr(197).chr(166) => 'T', chr(197).chr(167) => 't',
        chr(197).chr(168) => 'U', chr(197).chr(169) => 'u',
        chr(197).chr(170) => 'U', chr(197).chr(171) => 'u',
        chr(197).chr(172) => 'U', chr(197).chr(173) => 'u',
        chr(197).chr(174) => 'U', chr(197).chr(175) => 'u',
        chr(197).chr(176) => 'U', chr(197).chr(177) => 'u',
        chr(197).chr(178) => 'U', chr(197).chr(179) => 'u',
        chr(197).chr(180) => 'W', chr(197).chr(181) => 'w',
        chr(197).chr(182) => 'Y', chr(197).chr(183) => 'y',
        chr(197).chr(184) => 'Y', chr(197).chr(185) => 'Z',
        chr(197).chr(186) => 'z', chr(197).chr(187) => 'Z',
        chr(197).chr(188) => 'z', chr(197).chr(189) => 'Z',
        chr(197).chr(190) => 'z', chr(197).chr(191) => 's');
        
?>